cn.edu.zjnu.acm.judge.user.UserListController.java Source code

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Here is the source code for cn.edu.zjnu.acm.judge.user.UserListController.java

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/*
 * Copyright 2016 ZJNU ACM.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.edu.zjnu.acm.judge.user;

import cn.edu.zjnu.acm.judge.domain.User;
import cn.edu.zjnu.acm.judge.exception.BadRequestException;
import cn.edu.zjnu.acm.judge.mapper.UserMapper;
import cn.edu.zjnu.acm.judge.util.URLBuilder;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

/**
 *
 * @author zhanhb
 */
@Controller
public class UserListController {

    private static final Sort DEFAULT_SORT = new Sort(new Sort.Order(Sort.Direction.DESC, "solved"),
            new Sort.Order(Sort.Direction.ASC, "submit"), new Sort.Order(Sort.Direction.ASC, "user_id"));

    @Autowired
    private UserMapper userMapper;

    @GetMapping({ "/userlist", "/users" })
    @SuppressWarnings("AssignmentToMethodParameter")
    public String userlist(HttpServletRequest request, @PageableDefault(50) Pageable pageable) {
        Sort sort = pageable.getSort();
        int pageSize = Math.min(pageable.getPageSize(), 500);

        if (sort == null || !sort.iterator().hasNext()) {
            sort = DEFAULT_SORT;
        }

        pageable = new PageRequest(pageable.getPageNumber(), pageSize, sort);

        String query;
        try {
            query = URLBuilder.fromRequest(request).replaceQueryParam("page").toString();
        } catch (IllegalStateException | IllegalArgumentException ex) {
            throw new BadRequestException();
        }

        long totalUsers = userMapper.countByDisabledFalse();
        List<User> users = userMapper.findAll(pageable);
        PageImpl<User> page = new PageImpl<>(users, pageable, totalUsers);
        request.setAttribute("url", query);
        request.setAttribute("page", page);
        return "users/list";
    }

}